Renewable plow edge



H. J. WOOCK April 10, 1951 RENEWABLE PLOW EDGE Filed Jan. 26, 1946INVENTOR.

BY #525527 J 14 0006 Patented Apr. 10, 1951 UNITED STATES PATENT OFFICE2,548,458 RENEWABLE PLOW EDGE Herbert J. Woock, Alhambra, Calif.,assignor to Herbert E. Linden, Los Angeles, Calif.

Application January 26, 1946, Serial No. 643,760

'edge of a plowshare and having adjacent one end a socket adapted toreceive the point of the plowand adjacent the other end a plurality ofspring fingers which are adapted to cooperate with the body of the bladein clampingly engaging the edge of the plowshare therebetween.

Plowshares to which these renewable edges are applicable generallyconform to each other in shape but have minor differences in curvature.In some instances the urface of the share to which the blade is appliedis concave and the degree of concavity varies. Where the face of theplowshare is concave the blade of the renewable edge tends to remainstraight and in spaced rela- 2 Claims. (Cl. 97. 125) tion to theplowshare between the socket and the spring fingers.

An object of the present invention is to provide an improved renewableplow edge consisting of a blade having a socket adjacent one end and aplurality of spring fingers adjacent the other end and which between thesocekt and the spring fingers has a relatively stifi, unyielding contourlug that is engageable behind the plowshare to cause that portion of theblade between the socket and the spring fingers to be held firmlyagainst the forward face of the share so that it cannot spring forwardlythereof.

More specifically, an object of the invention is to provide a renewableedge for plowswherein the contour lug is so shaped as to facilitateitsapplication to the share and is so designed that regardless of theconstruction of the plow to which it is applied it will not engage orinterfere with the frog of the plow.

With the foregoing and other objects in view, which will be mademanifest in the following detailed description and specifically pointedout in the appended claims, reference is had to the accompanyingdrawings for an illustrative embodiment of the invention, wherein:

Figure 1 is a plan view of a portion of the plow illustrating theimproved plow edge in applied position thereon;

Fig. 2 is a sectional view taken substantially upon the line 2--2 uponFig. l, in the direction indicated; and

Fig. 3 is a partial view of a portion of the plowf edge, and may beregarded as having been taken substantially upon the line 3-3 upon Fig.1.

' Referring to the accompanying drawings wherein similar referencecharacters designate similar parts throughout, the general shape of theblade l0 may conform to the shape of the renewable edge as disclosed inmy copending application having at one end a socket ll adapted toreceive the point 12 of the plow. Adjacent the other-end of the bladethere is secured a section of heavy metal I3 suitably divided by slots I4 intoa plurality of spring fingers l5 that are.

welded at the lower ends to-the rear side of the blade and extendupwardly in spaced relation to the body of the blade and have theirupper ends bent forwardly slightly toward the plane of the blade. Thesespring fingers are adapted to cooperate with the body of the blade toclamp the edge of the plowshare between the fingers and the blade.Preferably the body of the blade is shaped as disclosed in my copendingapplication so as to avoid altering the draft of the plow when the edgeis applied thereto.

The improvement consists of providing a lug l6 which is welded as at l!at its lower end to the rear side of the blade. This lug is formed ofrelatively heavy unyielding metal so as to be quite stiff and has itsupper corner l8, which is closest to the socket l I, flared outwardly asindicated at l9. This lug is spaced from the body of the blade l0throughout the major portion of its length a distance approximatelyequal to the thickness of the plowshare. The lug is located intermediatethe socket H and the fingers and on applying the renewable edge to theplowshare the socket I l is first applied to the point and the bladeswung or sprung toward the plowshare so as to position the lugagainstthe rear face of the share. The flared corner l9 facilitates theinsertion of the edge of the share between the lug and the body of theblade while the blade is being swung upwardly and rearwardly to positionthe heel portion of the share between the blade and the spring fingers15. This lug serves to maintain that portion of the blade I!) betweenthe socket and the spring finger in firm close-fitting engagement withthat portion of the share that is adjacent the point even though thisportion may be concavely shaped. As the lug does not extend upwardlyabove the top edge of the blade it does not interfere with the frog ofthe plow that is frequently located on the rear side of the plow only ashort distance above the point.

Various changes may be made in the details of construction withoutdeparting from the spirit and scope of the invention as defined by theappended claims.

I claim:

1. A renewable plow edge comprising a blade adapted to be positionedalong the face of any of different makes of plowshares and having asocket adjacent one end adapted to receive the point of the plowshare, aplurality of spring fingers secured to the blade adjacent the other endthereof extending upwardly above the top edge of the blade, the fingersadapted to be sprung when a plowshare is inserted between the fingersand the blade to retain the blade on the plowshare, and a contour lugsecured to the rear side of the blade adjacent the socket intermediatethe socket and the fingers, said contour lug being welded to the rearside of the blade and being formed of stiff unyielding material andterminating short of the upper edge of the blade, the contour lug beingadapted when a plow is inserted between the lu and the blade topositively clamp the blade against the plowshare, the contour lug havingonly its upper corner closest the socket out-turned to serve as a mouthto receive the plowshare, the remaining part of the upper end of thecontour lug being straight.

2. A renewable plow edge comprising a blade adapted to be positionedalong the face of any of different makes of plowshares and having :asocket adjacent one end adapted to receive the point of the plowshare, aplurality of spring fingers secured to the blade adjacent the other 4end thereof extending upwardly above the top edge of the blade, thefingers adapted to be sprung when a plowshare is inserted between thefingers and the blade to retain the blade on the plowshare, and acontour lug secured to the rear side of the blade adjacent the socketintermediate the socket and the fingers, said contour lug being weldedto the rear side of the blade and being formed of stiiT unyieldingmaterial and terminating short of the upper edge of the blade, thecontour lug being adapted when a plowshare is-inserted between the lugand the blade to positively-clan p the blade against the plowshare toforce the blade against the plowshare.

* HERBERT J. WOOCK.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Great Britain Sept. 23, 1935

